Operating in Electron Ionization (EI) Mode 3
5977 Series MSD Operation Manual 85
5 Press lightly on the side board to ensure a correct seal. Press on the metal
box on the side board.
The foreline pump will make a gurgling noise. This noise should stop within a
minute. If the noise continues, there is a large air leak in your system,
probably at the side plate seal, the interface column nut, or the vent valve.
6 Start the MassHunter Data Acquisition program.
7 In the Instrument Control view, from the Instrument menu, select MS Vacuum
Control to display the Vacuum Control dialog.
8 In the Instrument Control view, Instrument menu, select MS Vacuum Control to
display the Vacuum Control dialog.
9 Click Pump Down in the Vacuum Control dialog and follow the system prompts.
10 When prompted, turn on the GC/MSD interface heater and GC oven. Click
OK when you have done so.
The software will turn on the ion source and mass filter (quad) heaters.
The temperature setpoints are stored in the current autotune (*.u) file.
11 After the message Okay to run appears, wait 2 hours for the MSD to reach
thermal equilibrium. Data acquired before the MSD has reached thermal
equilibrium may not be reproducible.
CAUTION
Do not turn on any GC heated zones until carrier gas flow is on. Heating a column with
no carrier gas flow will damage the column.
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